At this bohemian accommodation, guests who dream of joining the circus can spend the night in themed wagons.

Sound travels strangely in this underground whispering gallery.

This luxury hotel suite is located deep in the bowels of an old mine.

The world's oldest individual clonal tree looks like a wimp despite standing tall for 9,550 years.

According to legend, this boat-shaped henge is built over the grave of a mythic king.

The world's first ice hotel is still one of the most elaborate and beautiful.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

The world's largest model of our planetary system.

Stockholm's deepest subway station is also a stunning ecological wonder.

A series of modernist treehouse hotel rooms grace the outskirts of an Arctic forest.

A rare surviving Victorian greenhouse designed specifically to house giant water lilies.

A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.

Dine on food tied to Viking history and legend at this subterranean Stockholm spot.

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.

Micro-nation based around a nine-story high illegally built tower.

This collection of 80 polarizing foods aims to challenge your subjective notions of repulsion.

Crooked windswept pines give this old forest an enchanted and magical look.

Bring your hiking shoes, wool socks, and thermal underwear for a stay in these cozy forest huts.

Poetic, metallic giraffes adorn a square off an Edinburgh thoroughfare.

A shiny sculpture celebrating the mighty mollusk.

These ancient symbols freckling a Scottish cliff remained hidden for centuries.

Another entry into the world of Edinburgh's pop-up artworks.

Originally intended as a temporary installation, this sculpture is now a permanent part of a stunning Scottish beach.

A baffling beast so absurd a town councilman called it "intellectual vomit in technicolor."